After no idea how long playing this mod, and hoping for kids i need to be compatible with units/items i have at disposal in my playthrough i finally got idea how to get kids i want
It`s hard spoiler , but it`s nice way to test ALL kids in 1 game for functionality and bugs.
I play paladin game, and with high lds gain/lvlup i want unit specific kids, not some intellect/spell bonus and with Orcelyn i got Merist, Bogarius, Crag Hack and Tiva. Great kid is
Crag Hack , Boragus, and Merist noting special, but Tiva was total miss
SPOILER :
after getting some kid you dont like simply edit that kid with one you want in 2 mod files. So in orcelyn_babies.txt i just replaced names for Tiva and Gurnisson , and did same in eng_homm3_babies_orcelyn.lng . Game will replace mechanic for those 2 kids in already started play , and you can do this with all 4 kids to make your dream team 
For fun i changed to Diana, and took Piqueram , Thane , Dracon and Kalt. Play with 2x4000 thorn archer/thorn warrior , and 60 royal thorns with black thorn crown is interesting like hell. Only problem is i have no idea how to defeat Xeona with her fire rain spamming 
Have fun ppl